The 802.11 IEEE standard aims to update current Wireless Local Area Network (WLAN) standards to meet the high demands of future applications, such as 8K videos, augmented/virtual reality (AR/VR), the Internet of Things, telesurgery, and more. Two of the latest developments in WLAN technologies are IEEE 802.11be and 802.11ay, also known as Wi-Fi 7 and WiGig, respectively. These standards aim to provide Extremely High Throughput (EHT) and lower latencies. IEEE 802.11be includes new features such as 320 MHz bandwidth, multi-link operation, Multi-user Multi-Input Multi-Output (MIMO), orthogonal frequency-division multiple access, and Multiple-Access Point (multi-AP) cooperation (MAP-Co) to achieve EHT. With the increase in the number of overlapping Access Points (APs) and inter-AP interference, researchers have focused on studying MAP-Co approaches for coordinated transmission in IEEE 802.11be, making MAP-Co a key feature of future WLANs. Additionally, the high overlapping AP densities in EHF bands, due to their smaller coverage, must be addressed in future standards beyond IEEE 802.11ay, specifically with respect to the challenges of implementing MAP-Co over 60GHz bands. In this article, we provide a comprehensive review of the state-of-the-art in MAP-Co features and their drawbacks concerning emerging WLAN. Finally, we discuss several novel future directions and open challenges for MAP-Co.

翻译：IEEE 802.11标准旨在更新现行无线局域网（WLAN）标准，以满足未来应用（如8K视频、增强/虚拟现实（AR/VR）、物联网、远程手术等）的高需求。WLAN技术的两项最新进展是IEEE 802.11be和802.11ay，分别也称为Wi-Fi 7和WiGig。这些标准旨在提供极高吞吐量（EHT）和更低的延迟。IEEE 802.11be包含320 MHz带宽、多链路操作、多用户多输入多输出（MIMO）、正交频分多址以及多接入点（multi-AP）协作（MAP-Co）等新特性以实现EHT。随着重叠接入点（AP）数量增加及AP间干扰加剧，研究人员专注于研究IEEE 802.11be中用于协调传输的MAP-Co方法，使MAP-Co成为未来WLAN的关键特性。此外，由于EHF频段覆盖范围较小导致的高重叠AP密度，必须在IEEE 802.11ay之后的未来标准中加以解决，特别是60 GHz频段上实施MAP-Co的挑战。本文全面综述了MAP-Co特性的最新进展及其在新型WLAN中的不足，最后讨论了若干创新的未来方向和MAP-Co面临的开放挑战。